The lead-acid battery has more than 100 years of history, widely used as the starting power source of internal combustion engine, which is also a mature electric vehicle battery. The lead-acid battery positive and negative electrodes are neutralized and lead, respectively, and the electrolyte is sulfuric acid.
Lead-acid batteries can be divided into two categories, namely water-based lead-acid batteries, and valve-controlled lead-acid batteries. The former is cheap, but it needs to be maintained frequently, replenishes the electrolyte; the latter automatically adjusts the excess gas generated when the sealing battery in the battery body is automatically charged, maintenance, and more in line with electric vehicles. Since the technical of the lead-acid battery is mature, the lead-acid battery after further improvement will still be the main power supply of the electric vehicle, the advanced lead-acid batteries developed by the electric vehicle are mainly used: horizontal lead-acid batteries, double poles Sealed lead-acid batteries, roll electrode lead-acid batteries, etc.
The maintenance-free battery is made of lead calcium alloy. The amount of decomposition of water is small, low evaporation, and it is not necessary to add any liquid than the traditional lead-acid battery, which is small, and the corrosion of the wire, the electric wire and the body is strong. The starting current is large, and the time is long.
The lead-acid battery is composed of a positive and negative plate, a partition, a housing, an electrolyte, and a wiring, and the like. During the use, the maintenance-type lead-acid battery will cause excessive decomposition of water due to its own characteristics, so that the electrolyte reduce.
In general, the lead-acid battery has the advantages of reliability, easy to obtain raw materials, cheap, and the specific power can basically meet the dynamic requirements of electric vehicles.
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